A robust bushy climber up to 5 m long, young shoots densely pubescent-tomentose. Leaves broadly ovate, 4-7 cm x 1.5-4 cm, base rounded or often cordate, apex acute or often mucronate, pubescent beneath especially at the veins, with 4-6 pairs of secondary veins, slightly bullate, petiole 6-10 mm long. Inflorescence a compact, cymose panicle, terminal or at the extremities of short axillary branches, with up to 40 flowers, supported by large, ovate, acute foliaceous bracts; flowers with a 13-16 mm long calyx tube, lobes 7-10(-13) mm long, densely tomentose, corolla tube (15-)20-22 mm long, glabrous, with yellowish-green eye, with 6-9 lobes opening horizontally, recurved at the tip, up to 17 mm x 7-8 mm, overlapping at the base, slightly fragrant. Fruit a globose berry, black, surrounded by the suberect calyx lobes.

Used as an emmenagogue or emetic (root); lactagogue (flower)

PROSEA (Plant Resources of South-East Asia) Foundation

A poultice of the leaves is used to treat indolent ulcers.

Kundphul, kurukkuttimulla, makarandam, gajari, kundamu, kundah (India); sampagitang-sunsong (Philippines)